/* ==================== 后台管理样式 ==================== */
.admin-body {
    background: var(--bg-dark);
    min-height: 100vh;
}

.admin-login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0a0f1e 0%, #1a1f3e 50%, #0a0f1e 100%);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 2rem;
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-logo {
    height: 60px;
    width: auto;
    border-radius: 12px;
    margin-bottom: 1rem;
}

.login-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.login-subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.login-form .form-group {
    margin-bottom: 1.25rem;
}

.login-form label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.login-form input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9375rem;
    transition: border-color 0.2s;
}

.login-form input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-error-msg {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.form-error-msg.hidden {
    display: none;
}

.login-submit-btn {
    width: 100%;
    padding: 0.875rem;
    font-size: 1rem;
    margin-top: 0.5rem;
}

.login-footer {
    text-align: center;
    margin-top: 1.5rem;
}

.login-footer a {
    color: var(--text-muted);
    font-size: 0.875rem;
    text-decoration: none;
}

.login-footer a:hover {
    color: var(--primary-color);
}

.admin-wrapper {
    display: flex;
    min-height: 100vh;
}

/* ==================== 侧边栏样式 ==================== */
.admin-sidebar {
    width: 260px;
    background: var(--bg-card);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-logo {
    height: 40px;
    width: auto;
    border-radius: 8px;
}

.sidebar-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
    overflow-y: auto;
}

.sidebar-nav .nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.5rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    font-size: 0.9375rem;
}

.sidebar-nav .nav-item:hover {
    background: rgba(0, 102, 255, 0.1);
    color: var(--text-primary);
}

.sidebar-nav .nav-item.active {
    background: rgba(0, 102, 255, 0.15);
    color: var(--primary-color);
    border-right: 3px solid var(--primary-color);
}

.nav-icon {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: 1rem 0;
    border-top: 1px solid var(--border-color);
}

.logout-btn {
    color: var(--danger-color) !important;
}

/* ==================== 主内容区域 ==================== */
.admin-main {
    flex: 1;
    margin-left: 260px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.admin-header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    position: sticky;
    top: 0;
    z-index: 50;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

.header-search {
    flex: 1;
    max-width: 400px;
}

.header-search .search-input {
    width: 100%;
    padding: 0.625rem 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
}

.header-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-name {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

/* ==================== 内容区域 ==================== */
.admin-content {
    flex: 1;
    padding: 2rem;
}

.page {
    display: none;
}

.page.active {
    display: block;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.page-subtitle {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* ==================== 统计卡片 ==================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all var(--transition-fast);
}

.stat-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.stat-icon {
    font-size: 2.5rem;
    width: 60px;
    height: 60px;
    background: rgba(0, 102, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.stat-trend {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-weight: 600;
}

.stat-trend.up {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.stat-trend.down {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.stat-trend.stable {
    background: rgba(156, 163, 175, 0.1);
    color: var(--text-muted);
}

/* ==================== 仪表板网格 ==================== */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.dashboard-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* ==================== 数据表格 ==================== */
.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    padding: 0.875rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--bg-card-hover);
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.875rem;
    white-space: nowrap;
}

.data-table td {
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.data-table tbody tr:hover {
    background: rgba(0, 102, 255, 0.05);
}

/* ==================== 状态标签 ==================== */
.status-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge.active,
.status-badge.online,
.status-badge.paid {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.status-badge.inactive,
.status-badge.offline,
.status-badge.cancelled {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.status-badge.pending {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.status-badge.busy,
.status-badge.expired {
    background: rgba(156, 163, 175, 0.1);
    color: var(--text-muted);
}

/* ==================== 操作按钮 ==================== */
.action-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    margin-right: 0.5rem;
    transition: color var(--transition-fast);
    font-size: 1rem;
}

.action-btn:hover {
    color: var(--primary-color);
}

.action-btn.delete:hover {
    color: var(--danger-color);
}

/* ==================== 过滤栏 ==================== */
.filter-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.filter-input {
    flex: 1;
    min-width: 200px;
    padding: 0.625rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
}

.filter-select {
    padding: 0.625rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    cursor: pointer;
}

/* ==================== 分页 ==================== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.pagination button {
    padding: 0.5rem 0.875rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.pagination button:hover,
.pagination button.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* ==================== 服务器网格 ==================== */
.servers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.server-manage-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all var(--transition-fast);
}

.server-manage-card:hover {
    border-color: var(--primary-color);
}

.server-manage-card.popular {
    border-color: var(--warning-color);
}

.server-manage-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.server-manage-info h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.server-manage-info p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.server-manage-actions {
    display: flex;
    gap: 0.5rem;
}

.server-manage-stats {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.server-stat {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.server-stat strong {
    color: var(--text-primary);
}

/* ==================== 价格管理 ==================== */
.pricing-region-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.region-tab {
    padding: 0.625rem 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.region-tab:hover,
.region-tab.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* ==================== 评价列表 ==================== */
.reviews-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.review-manage-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.review-manage-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.review-manage-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.review-manage-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-card-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.review-manage-name {
    font-weight: 600;
}

.review-manage-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.review-manage-rating {
    color: #fbbf24;
    letter-spacing: 2px;
}

.review-manage-text {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.review-manage-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

/* ==================== 设置页面 ==================== */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 1.5rem;
}

.settings-section {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.settings-section .section-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.settings-section .form-group {
    margin-bottom: 1.25rem;
}

.settings-section label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.settings-section input[type="text"],
.settings-section input[type="email"],
.settings-section input[type="number"],
.settings-section textarea,
.settings-section select {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.settings-section input[type="checkbox"] {
    margin-right: 0.5rem;
}

.data-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

/* ==================== 模态框增强 ==================== */
.modal-content {
    max-width: 500px;
}

.modal-sm .modal-content {
    max-width: 400px;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.modal-text {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

/* ==================== 服务器状态列表 ==================== */
.server-status-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.server-status-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--bg-card-hover);
    border-radius: 8px;
}

.server-status-name {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.server-status-name .flag {
    font-size: 1.25rem;
}

.server-status-load {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.load-mini-bar {
    width: 80px;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
}

.load-mini-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.3s ease;
}

.load-mini-fill.low {
    background: var(--success-color);
}

.load-mini-fill.medium {
    background: var(--warning-color);
}

.load-mini-fill.high {
    background: var(--danger-color);
}

/* ==================== 通知 ==================== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    z-index: 9999;
    display: none;
    animation: slideIn 0.3s ease;
}

.notification.show {
    display: block;
}

.notification.success {
    background: var(--success-color);
}

.notification.error {
    background: var(--danger-color);
}

.notification.info {
    background: var(--primary-color);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }

    .admin-sidebar.active {
        transform: translateX(0);
    }

    .admin-main {
        margin-left: 0;
    }

    .sidebar-toggle {
        display: block;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .settings-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .admin-content {
        padding: 1rem;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .servers-grid {
        grid-template-columns: 1fr;
    }

    .filter-bar {
        flex-direction: column;
    }

    .filter-input,
    .filter-select {
        width: 100%;
    }

    .data-table {
        font-size: 0.875rem;
    }

    .data-table th,
    .data-table td {
        padding: 0.625rem 0.5rem;
    }
}

/* ==================== 滚动条样式 ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}